#  Copyright 2013-2014 Nokia Solutions and Networks
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
class Logger(object):

    def __init__(self, header, stream):
        self._header = header
        self._stream = stream

    def __call__(self, message):
        if self._stream:
            self._stream.write(' %-8s |   %s\n' % (self._header, message))
